androdz

Remember they may state that but they dont say in what conditions. The stock system they could had tested at 4,000 feet @ 98 degrees with high humidity and then they could test it at sea level, 40f with low humidity. That alone will increase the #´s w/o changing nothing. So like I said 6-7hp is more like it. Yeah all axle backs are more or less the same, it is all on what sound are you going for. Personally I dont like a cop that is in another county to hear me when I put it the floor so I went with corsas. Also make sure of what steel they are made off. Flowmasters and others are made with cheap steel and tend to break and rattle in the long run.

Att. Andrew

jerseystang07

Seriously where did you get Corsas for $160 or $450??? Definately hit me up with a link there!

RomanPacific

I bought mine from a guy that switched to an off road x-pipe and supercharger. He only had about 2,000 miles on them but said they were too loud after the last two mods. I saw a set on ebay for $480 right after that.

drbobvs

Yeah, I bought mine second hand for $450. Some guy traded in his GT for a Saleen and had to put it back to stock priot to the trade.

06torchredgt

I have 06 mustang gt with corsa exhuast, after installed
felt like I loss the low end compare to stock exhuast.
power = no difference , just the sound

sandy

All indications I've seen show no hp gains from performance mufflers over stock; just some additional noise.

androdz

I do got a dyno for 6hp gain, done before and after the install.

Att. Andrew